Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided in four parts:
  1. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provide some useful information on the computer.
  2. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser !
  3. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to 1200 seconds. After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to 1230 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (900Mb).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  4. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.

General information on the benchmark

Namemps-v2-13-7/MIPLIB/miplib2003/normalized-mps-v2-13-7-momentum2.opb
MD5SUMfdda3e6614261ac2a721bfd288fcd783
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 18541
Biggest coefficient in the objective function 81920000
Number of bits for the biggest coefficient in the objective function 27
Sum of the numbers in the objective function 454826456
Number of bits of the sum of numbers in the objective function 29
Biggest number in a constraint 128000000000000001700807049216
Number of bits of the biggest number in a constraint 97
Biggest sum of numbers in a constraint 467242513675650034629158633472
Number of bits of the biggest sum of numbers99
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark111.339
Number of variables19741
Total number of constraints27909
Number of constraints which are clauses10362
Number of constraints which are cardinality constraints (but not clauses)1921
Number of constraints which are nor clauses,nor cardinality constraints15626
Minimum length of a constraint1
Maximum length of a constraint730

Trace number 6591

Launcher Data

LAUNCH ON wulflinc4 THE 2005-09-20 08:05:31 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=4480 boxname=wulflinc4 idbench=964 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  fdda3e6614261ac2a721bfd288fcd783  /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-13-7-momentum2.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-13-7-momentum2.opb
IDLAUNCH: 4480
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.169
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.169
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 899.07

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        793620 kB
Buffers:         33836 kB
Cached:         180032 kB
SwapCached:        876 kB
Active:         124088 kB
Inactive:        92352 kB
HighTotal:      131008 kB
HighFree:         3808 kB
LowTotal:       903652 kB
LowFree:        789812 kB
SwapTotal:     2097136 kB
SwapFree:      2095644 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5540 kB
Slab:            18900 kB
Committed_AS:    72360 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-20 08:06:42 (client local time) WITH STATUS 0 IN 69.8864 SECONDS
stats: 4480 7 69.8864 0

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-13-7-momentum2.opb ......
PBS4: pbs_dbase.cpp:355: void CDatabase::setMultipleWatch(PBClause*): Assertion `current_term->get_coeff() >0' failed.

Watcher Data

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGTERM then SIGKILL): 921600 Kb
Enforcing VSIZE limit: 994918400 bytes
Current StackSize limit: 67108864 bytes
Raw data (/proc/10849/stat): 10849 (PBS4) R 10848 10849 6847 0 -1 0 18 0 0 0 0 0 0 0 22 0 1 0 1798718934 978944 2 4294967295 134512640 135450776 3221224560 3221224560 134512960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/10849/statm): 239 2 232 232 0 7 0
[pid=10849] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-13-7-momentum2.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-13-7-momentum2.opb

[startup+10.0034 s]
Raw data (loadavg): 1.06 1.02 0.97 2/56 10849
Raw data (/proc/10849/stat): 10849 (PBS4) R 10848 10849 6847 0 -1 0 1175 0 0 0 995 4 0 0 25 0 1 0 1798718934 5787648 1125 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/10849/statm): 1413 1125 232 232 0 1181 0
[pid=10849] vsize: 5652
Current children cumulated CPU time (s) 9.99
Current children cumulated vsize (Kb) 5652

[startup+20.0043 s]
Raw data (loadavg): 1.05 1.01 0.97 2/56 10849
Raw data (/proc/10849/stat): 10849 (PBS4) R 10848 10849 6847 0 -1 0 3463 0 0 0 1984 12 0 0 25 0 1 0 1798718934 10358784 2293 4294967295 134512640 135450776 3221224560 3221223136 134864658 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/10849/statm): 2529 2293 232 232 0 2297 0
[pid=10849] vsize: 10116
Current children cumulated CPU time (s) 19.96
Current children cumulated vsize (Kb) 10116

[startup+30.0051 s]
Raw data (loadavg): 1.04 1.01 0.97 2/56 10849
Raw data (/proc/10849/stat): 10849 (PBS4) R 10848 10849 6847 0 -1 0 3913 0 0 0 2974 19 0 0 25 0 1 0 1798718934 12169216 2743 4294967295 134512640 135450776 3221224560 3221223072 134599221 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/10849/statm): 2971 2743 232 232 0 2739 0
[pid=10849] vsize: 11884
Current children cumulated CPU time (s) 29.93
Current children cumulated vsize (Kb) 11884

[startup+40.006 s]
Raw data (loadavg): 1.04 1.01 0.97 2/56 10849
Raw data (/proc/10849/stat): 10849 (PBS4) R 10848 10849 6847 0 -1 0 4732 0 0 0 3965 25 0 0 25 0 1 0 1798718934 15613952 3562 4294967295 134512640 135450776 3221224560 3221223072 134600472 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/10849/statm): 3812 3562 232 232 0 3580 0
[pid=10849] vsize: 15248
Current children cumulated CPU time (s) 39.9
Current children cumulated vsize (Kb) 15248

[startup+50.0059 s]
Raw data (loadavg): 1.03 1.01 0.97 2/56 10849
Raw data (/proc/10849/stat): 10849 (PBS4) R 10848 10849 6847 0 -1 0 5237 0 0 0 4956 31 0 0 25 0 1 0 1798718934 17641472 4067 4294967295 134512640 135450776 3221224560 3221223072 134600401 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/10849/statm): 4307 4067 232 232 0 4075 0
[pid=10849] vsize: 17228
Current children cumulated CPU time (s) 49.87
Current children cumulated vsize (Kb) 17228

[startup+60.0068 s]
Raw data (loadavg): 1.03 1.01 0.97 2/56 10849
Raw data (/proc/10849/stat): 10849 (PBS4) R 10848 10849 6847 0 -1 0 6234 0 0 0 5947 37 0 0 25 0 1 0 1798718934 21618688 5064 4294967295 134512640 135450776 3221224560 3221223072 134599343 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/10849/statm): 5278 5064 232 232 0 5046 0
[pid=10849] vsize: 21112
Current children cumulated CPU time (s) 59.84
Current children cumulated vsize (Kb) 21112

[startup+70.0066 s]
Raw data (loadavg): 1.02 1.01 0.97 2/56 10849
Raw data (/proc/10849/stat): 10849 (PBS4) R 10848 10849 6847 0 -1 0 6805 0 0 0 6937 44 0 0 25 0 1 0 1798718934 23969792 5635 4294967295 134512640 135450776 3221224560 3221223088 134863941 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/10849/statm): 5852 5635 232 232 0 5620 0
[pid=10849] vsize: 23408
Current children cumulated CPU time (s) 69.81
Current children cumulated vsize (Kb) 23408
One traced child (pid=10849) ended because it received signal 6 (SIGABRT)
All traced children have exited ! Game is over.

Child ended because it received signal 6 (SIGABRT)
Real time (s): 70.0709
CPU time (s): 69.8864
CPU user time (s): 69.4264
CPU system time (s): 0.45993
CPU usage (%): 99.7366
Max. virtual memory (cumulated for all children) (Kb): 23408

Verifier Data

ERROR: no interpretation found !